#643A87#643A87

#643A87 is a dark, vivid violet. Relative luminance 0.075; OKLCH L 43.6% C 0.127 H 307.1°. Best body text is #FFFFFF at 8.41:1 contrast (WCAG AA passes).

Color values

HEX	#643A87
RGB	rgb(100, 58, 135)
HSL	hsl(273, 40%, 38%)
HSV	hsv(273, 57%, 53%)
CMYK	cmyk(25.9%, 57%, 0%, 47.1%)
CIE-LAB	lab(32.89, 33.98, -36.15)
CIE-LCH	lch(32.89, 49.61, 313.23°)
OKLab	oklab(43.58% 0.0768 -0.1017)
OKLCH	oklch(43.58% 0.127 307.1)
XYZ	xyz(11.1409, 7.4848, 23.7748)
Luminance	0.0748 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A87 #5D873A

analogous

#3D3A87 #643A87 #873A83

triadic

#643A87 #87643A #3A8764

tetradic

#643A87 #873D3A #5D873A #3A8387

square

#643A87 #873D3A #5D873A #3A8387

split-complementary

#643A87 #83873A #3A873D

monochromatic

#251531 #44285C #643A87 #844CB2 #A177C5

Accessibility & contrast

On white

8.41

#643A87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#643A87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A87

8.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A87	#FFFFFF	#000000	##FFFFFF
##643A87	1.00	8.41	2.50	8.41
#FFFFFF	8.41	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#204C8A

Deuteranopia (green-blind)

#2F4E85

Tritanopia (blue-blind)

#5F485B

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #643a87;
/* rgb */ color: rgb(100, 58, 135);
/* oklch */ color: oklch(43.6% 0.127 307.1);

Tailwind

colors: {
  custom: {
    50: '#9272aa',
    500: '#643a87',
    950: '#000000',
  },
}

SCSS

$custom: #643a87;
$custom-light: #9272aa;
$custom-dark: #000000;

JSON

{
  "hex": "#643a87",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 135
  },
  "hsl": {
    "h": 272.727,
    "s": 39.896,
    "l": 37.843
  },
  "oklch": {
    "l": 0.43576,
    "c": 0.12745,
    "h": 307.1
  },
  "luminance": 0.07485
}

Semantic roles & 50–950 ramp

primary

#643A87

secondary

#8CAE6F

accent

#D0588E

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D0810

muted

#7E7B7F

Preview Lab

Preview with #643A87

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →